39fe6a0dff
fs/nxffs: Add partial implementation of the truncate method: It extend files, but cannot yet shrink them.
fs/smartfs: Add partial implementation of the truncate method: It extend files, but cannot yet shrink them.
fs/fat: Add partial implementation of the truncate method: It extend files, but no yet shrink them.
fs/nfs: Add support for the truncate method to the NFS file system.
135 lines
4.0 KiB
C
135 lines
4.0 KiB
C
/****************************************************************************
|
|
* fs/nxffs/nxffs_ioctl.c
|
|
*
|
|
* Copyright (C) 2011, 2013, 2017-2018 Gregory Nutt. All rights reserved.
|
|
* Author: Gregory Nutt <gnutt@nuttx.org>
|
|
*
|
|
* References: Linux/Documentation/filesystems/romfs.txt
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* 3. Neither the name NuttX nor the names of its contributors may be
|
|
* used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
|
|
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
|
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
|
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
|
|
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
|
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <string.h>
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <nuttx/semaphore.h>
|
|
#include <nuttx/fs/fs.h>
|
|
#include <nuttx/fs/ioctl.h>
|
|
#include <nuttx/mtd/mtd.h>
|
|
|
|
#include "nxffs.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxffs_ioctl
|
|
*
|
|
* Description:
|
|
* Standard mountpoint ioctl method.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nxffs_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
|
|
{
|
|
FAR struct nxffs_volume_s *volume;
|
|
int ret;
|
|
|
|
finfo("cmd: %d arg: %08lx\n", cmd, arg);
|
|
|
|
/* Sanity checks */
|
|
|
|
DEBUGASSERT(filep->f_priv != NULL && filep->f_inode != NULL);
|
|
|
|
/* Recover the file system state from the open file */
|
|
|
|
volume = filep->f_inode->i_private;
|
|
DEBUGASSERT(volume != NULL);
|
|
|
|
/* Get exclusive access to the volume. Note that the volume exclsem
|
|
* protects the open file list.
|
|
*/
|
|
|
|
ret = nxsem_wait(&volume->exclsem);
|
|
if (ret < 0)
|
|
{
|
|
ferr("ERROR: nxsem_wait failed: %d\n", ret);
|
|
goto errout;
|
|
}
|
|
|
|
/* Only a reformat and optimize commands are supported */
|
|
|
|
if (cmd == FIOC_REFORMAT)
|
|
{
|
|
finfo("Reformat command\n");
|
|
|
|
/* We cannot reformat the volume if there are any open inodes */
|
|
|
|
if (volume->ofiles)
|
|
{
|
|
ferr("ERROR: Open files\n");
|
|
ret = -EBUSY;
|
|
goto errout_with_semaphore;
|
|
}
|
|
|
|
/* Re-format the volume -- all is lost */
|
|
|
|
ret = nxffs_reformat(volume);
|
|
}
|
|
|
|
else if (cmd == FIOC_OPTIMIZE)
|
|
{
|
|
finfo("Optimize command\n");
|
|
|
|
/* Pack the volume */
|
|
|
|
ret = nxffs_pack(volume);
|
|
}
|
|
else
|
|
{
|
|
/* No other commands supported */
|
|
|
|
ret = -ENOTTY;
|
|
}
|
|
|
|
errout_with_semaphore:
|
|
nxsem_post(&volume->exclsem);
|
|
errout:
|
|
return ret;
|
|
}
|